Rohde and Schwarz Gmbh & Co. Kg

Rohde & Schwarz Asia Pte. Ltd

Rajashekar Durai

Hanush Khurana

Gerson Bacor

Chun Guan Tay

Sellathamby Suthaharan

Sheheen Muhamed

Fernando Schmitt

Prabhakaran Ekambaram

Stefan Maier

Christoph Nufer

Kok Meng Wong

KokMeng Wong

Chris Aldridge

Shiwei Pang

Felix Aumer

CheeShen Lau

Peter John Green

ChunGuan Tay

Vinzenz Dallabetta

Michael Allwang

Henry Foo

Arularasan Ramasamy

Michael Fischlein

Gerson Calamba Bacor

Ahhock Law

Yin Tan

Kyzer Tey

Elicia Tiah

Christopher Anthony Aldridge

Disclosed are a method of and a system for interference with a transmission of an OFDM signal comprising multiple data frames which respectively comprise a preceding frame preamble and a succeeding frame preamble. The method comprises: receiving a succeeding frame preamble of a first data frame of the multiple data frames; identifying a first radio power and a first equalization parameter associated with the received succeeding frame preamble; determining a second radio power on a same order of magnitude as the first radio power, and a second equalization parameter differing from the first equalization parameter; receiving a preceding frame preamble of a second data frame of the multiple data frames; and retransmitting the succeeding frame preamble of the first data frame concurrently with a succeeding frame preamble of the second data frame. The retransmitted succeeding frame preamble comprises the second radio power and the second equalization parameter.

Method of and system for interference with a transmission of an orthogonal frequency-division multiplex (OFDM) signal

A terrestrial positioning system includes a mobile terrestrial transmitter including a local clock source and an inertial measurement unit, and a synchronization master including a memory configured to store initially known positioning information of the terrestrial transmitter. The terrestrial transmitter determines altered positioning information of the terrestrial transmitter using the first IMU and broadcasting a positioning signal including a timestamp. The synchronization master calculates an expected time of flight of the received positioning signal based on the determined altered positioning information and the stored initially known positioning information of the terrestrial transmitter, to determine a first deviation of the actual time of flight determined from the timestamp and the actual reception time of the received positioning signal with respect to the calculated expected time of flight and to instruct the terrestrial transmitter to delay or prepone the broadcast of the positioning signal.

Terrestrial positioning system and method for improved terrestrial positioning

A test system for benchmark testing a device under test is described. The test system comprises a device under test having hardware components, an operating system and at least one over-the-top traffic unit. The test system also has at least one network unit providing a network for the benchmark testing. The test system further comprises at least one control unit controlling the benchmark testing. In addition, the test system has at least one measurement unit configured to acquire benchmark data of the device under test. The control unit is configured to control the measurement unit and the over-the-top traffic unit. Further, a method for benchmark testing a device under test is described.

Test system and method for benchmark testing a device under test

A test system is provided. Said test system comprises a device under test, a measurement equipment, and a remote source simulator. In this context, the remote source simulator is adapted to simulate a remote video source, wherein the remote video source is adapted to transmit a video comprising at least one detection pattern to the device under test. Furthermore, the device under test is adapted to display the video. In addition to this, the measurement equipment is adapted to detect the at least one detection pattern with respect to the device under test and to determine the number of detection patterns having been received by the device under test.

Test system and method using detection patterns

An approach for the analysis of the impact of over the top (OTT) applications is provided, which operate 'over the top' of the network applications, with respect to network performance and power consumption on mobile devices. A wireless network for an application-carrying device separate from wireless communications network test equipment is simulated. A wireless communications interface between the simulated network and the application-carrying device is monitored. The monitoring comprises measuring signaling data on a control plane, and measuring application data on a user plane related to at least one application implemented on the application-carrying device. Cross-layer measurement data is generated based on the measured signaling data and application data. The signaling data and the application data are measured on the basis of a common time reference of the test equipment.

Technique for testing wireless network load produced by mobile app-carrying devices

A control arrangement for communicating remotely with an electronic device comprises a local control unit associated with the electronic device, the local control unit comprising a first non-RF spectrum receiver for non-RF spectrum uplink communication signals and a controller coupled to the first receiver for controlling the electronic device based on the received non-RF spectrum uplink communication signals, and a remote control unit with a first non-RF spectrum transmitter for transmitting the non-RF spectrum uplink communication signals to the local control unit.

Control arrangement and control method

The present invention provides a testing system for a video and audio reproduction system, the testing system comprising a data source, comprising video and audio data for reproduction by the video and audio reproduction system, the video and audio data comprising unique marks in every video frame and every audio frame, a recording unit, configured to record a video stream and an audio stream generated by the video and audio reproduction system based on the video and audio data, and a test processor, configured to extract the unique marks from the recorded video stream and the recorded audio stream, and to verify if respective unique marks of simultaneous video frames and audio frames have been recorded by the recording unit simultaneously. Furthermore, the present invention provides a testing method, a computer program product, and a non-transitory computer readable data carrier.

Testing system, testing method, computer program product, and non-transitory computer readable data carrier

The invention relates to a technique for especially testing an IEEE 802.11 WLAN device, in particular for testing performance compliance of the device. According to a method aspect to be performed by a test system, exchange of an ICMP message pair is initiated between the device under test (DUT) and the test system; and a backoff time selected by the DUT during the message exchange is determined.

Method and test system for testing wireless LAN devices

A measuring device comprises a transmission unit and a communication unit. The transmission unit is adapted to transmit a measuring signal, being an analog high frequency broadcast signal to at least one device under test. The communication unit is adapted directly receive at least one measuring result from the at least one device under test.

Measuring device and measuring method using broadcast measuring signals

Universal holding apparatus for holding a device under test, DUT, said universal holding apparatus comprising: a base plate configured to mount at least two DUT holders for holding the device under test each DUT-holder having at least one pad, wherein the at least two DUT-holders are positionable on said base plate to clamp said device under test, DUT, between them, wherein the pad of at least one of said DUT-holders for holding the device under test, DUT, is slidable to adjust a clamping distance between the DUT-holders for engaging said device under test, DUT.

Universal holding apparatus for holding a device under test

A measuring system for measuring video processing quality of a device under test includes a measuring device comprising transmission means set up for transmitting a video to the device under test. The device under test is set up for receiving the video and displaying it using a display included by the device under test. The video includes at least a first barcode to be displayed for a first duration. The measuring system includes a barcode reader set up for reading the first barcode from the display of the device under test. The measuring system is set up for determining the video processing quality of the device under test based upon measuring results of the barcode reader.

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Singapore, Singapore

Rajashekar Durai